EHRs, or Electronic Health Records, have overall been an improvement to the healthcare, but still cause medical errors. Recently, on NPR WAMU (DC) some leading experts sat down to discuss the challenges EHRs present:

http://thekojonnamdishow.org/shows/2013-10-30/improving-electronic-health-records (click the "Listen" link at the top of the page for a great hour-long discussion). One of the guests is Ben Shneiderman, who is a usability author and expert at the University of Maryland.